Thaxterogaster talimultiformis is a species of mushroom-producing fungus in the family Cortinariaceae, originally described as Cortinarius talimultiformis in 2014 before being reclassified to the genus Thaxterogaster in 2022. The mushroom produces caps measuring 4–12 cm across that range from ochre-yellow to red-brown with a viscid surface, pale grey to greyish brown gills, and a white stipe that often forms a club shape or slightly bulbous base. Its species epithet talimultiformis refers to its shared features with the related species T. multiformis and T. talus. Common throughout North and Central Europe and also recorded in Turkey's eastern Black Sea region, this fungus grows in hemiboreal to boreal coniferous woodland, particularly with spruce and fir trees on calcareous soils.

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